{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbd78a12d27bdea72665d7b6b91004165dfd9af055e178d01bb741f73f23ff771",
    "signature": "0xcd69b6a07a186627de3feab89c1600513cb3726163e0c716c6d1b36ac202457255d98194eb5107099efe965aa8422d55f93d2be9c38f8d84b8156f23848fbbdb1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}