{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc9b898aca29445fa5da5f186ea82f4c6422199b39431165df3fc66106d72f93a",
    "signature": "0xc4a522f1eef3362bf8f703734708c64a1f4225fdde6a032b0c79718c18f39a3871b25c30a9d99a5a09cad74667b7736f649b04610cfb5baf037c11a6e1f11fcf1c",
    "signer": "0x981318F4D2dEaD9899eEb12Da4cfA8E69C96e3cc",
    "userId": "523637076"
  }
}