{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16782",
    "entityType": "User",
    "nonce": "0x3db547ef7cf4e187cba8f0b17c42f5e58d2d565a804364a7dda384b17c32c083",
    "signature": "0x1bc5da6078c5e72a7bcceb89b1f25242ee1635978bff6a3d0b1d6479826c389e3e6447f205906632ac2b141774b4946d783b2815db477f794f1484908731c1621c",
    "signer": "0x8c83aB7F6a7f7A93A7CeFeF6E16b212bA43529f5",
    "userId": "549340592"
  }
}