{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "225974748",
    "entityType": "User",
    "nonce": "0x9aa71540c18ceaf32c0c67db47672b877b6fa31961d1d6283e9b56e04f72c83b",
    "signature": "0x371503cef46bbef930073fa76ff7ed412e3bef3062bcb79cc5550bfd0998dc2b68cd869203cac9650e8a243da365f63729d82653090218c8eeac81c52cda253f1b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}