{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x70a11975084c0895842c7085544663943e63c98fc9c90ac39f0f354d7c958c7d",
    "signature": "0x2c571f42345afa0212853912c4e610d64f57ec2bd34f7b35682b09211c53ecd46572019fa884d63bc621697102a769dabba983cff79ff0982042960ad08fdbc71b",
    "signer": "0x7a78569646ADa00a4d555F20fA48e9cDb9ef14F5",
    "userId": "333304008"
  }
}