{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "639109",
    "entityType": "User",
    "nonce": "0xd1b62dbdae8e42d75ae12af11791d59c4e389a6a44b0a0b7c0393b7d0600b39e",
    "signature": "0xc354c4ac1ddd8be20c0ab3a4d1a0ca14e9b6dca2a6ec626829ca7ef9817018b979af3ba8136d6175f6ff0510ac2d75869428edc61d868e7c55b1138f1ed2419c1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}