{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139",
    "entityType": "User",
    "nonce": "0x0abd04ca5b8cc427b2a7be8a6f5570c022b908acf6646facd5b6a5e8dcc83aa6",
    "signature": "0x744ed8be896664218d681be60c81d2ad5040b1bf4b7503ea0bfaeb75478c502a5a709b208ed5180b282cc6d97c2d3b4cbdeff59d4be7894f7926fd090f8ec2b21c",
    "signer": "0xeD4de8C7aEdcca7a62a5E17Fb9DF5ee4991E5b73",
    "userId": "209405413"
  }
}