{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x4d6feb191496be64d00d4699b9b3e6e9e53c1c2c50cc6a2ff57f8284cf36fed0",
    "signature": "0xcb7ecc6e502479dec3a848f8ccfdd2c0747a3da6247475de1c1537e9dd73ecec140acaead2d9b0238dda2e49c238c3675da9bb95da66dc95370e83cece1c53851c",
    "signer": "0x9837C03EAdfA74365Cdf4e01e6840D356104bFab",
    "userId": "911622928"
  }
}