{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "650209",
    "entityType": "User",
    "nonce": "0xa2dea3503e26d8d95ab956dd4530c6a8a3866c71f0b5e13234ba5b2fc534419f",
    "signature": "0x1a399130f6966214f9438d49f198a834438b090e1e8cca2e3f5040ec4b09b6f75cb20942b21746d634f5c4b5613f042f2cae85203e54b6fe648aad70e397b3dc1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}