{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "105001",
    "entityType": "User",
    "nonce": "0x5692ec8f644ae0d2810baf82b92cc79b2c529395ed58d4a24597a00523047a9c",
    "signature": "0x996bad4aa3513c115946de60cc3637a0cc9c2e546e7c79f26db9388edcd0bb7b332006ad5d3a61ab8bbc4569b0c01b93db20372c544b22c871b0d251c40b5c3d1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}