{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "646385",
    "entityType": "User",
    "nonce": "0xe5dd6d3e55db77bb853418a351aae49e88f8a8c110d7c493400f5617a73c1bba",
    "signature": "0x03245f6d9b216b38f8c45e0b70d5c82c8f665fa16bb0679813ea2b2b21b86f4833d02759dcfbd0799ba4fb81ce53e59f1435b927d2414389669c013e5e93e15f1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}