{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77551267",
    "entityType": "User",
    "nonce": "0x3c6592b1a7a1bb1f321f0bbf78f67c429fed9fd0c57c61c42fa7e7d22dec3685",
    "signature": "0x2334aea77874a966d86d5fe3735b07087fd0ed89a26b36229657b9d1ba7cd01942c75b24e4f3007085585f504992ef1ba3808dffb6ef9b6e411d8a6c443264991b",
    "signer": "0xc903Dc0f07bdD225292556170C57c22eD0C2b453",
    "userId": "142317"
  }
}