{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x95a9ee3693a629d507eec4e4422ed587734e5a040f9167835db765b55fabd89f",
    "signature": "0x03cbf75efa25a3f4863ee6365c432620627b0cc9d034ffcd1c5291cbe5834b9f494452bd4288465f987030fee4d6b7ddc479c36edd1e43fda8fb984fc0c9a2c41c",
    "signer": "0x975699e892A0a2f2f16d2b8950Ac7C882B8EF555",
    "userId": "544952248"
  }
}