{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "372498",
    "entityType": "User",
    "nonce": "0xd34b9310e90a940007b6667723537215e5de1a9c82abc56adf2c4d18f2107269",
    "signature": "0x1f598b34dd4c4ecb340c5b2d602d19b409094648d3819382077d1071c500dcd53c803ce85702a0cba104ba1661ac5d807fc5d5c3b338484cee35f620ec5fa19d1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}