{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x0339622d7d7fc56ced8afa4ce6a8c91f1bc149507ae60f7e4010c8c68b01be44",
    "signature": "0x69f27c84039bb3de000239e6bf9efcb115a3ccad7d4b45794df1c43e6c2f968c79c5c1e74064f08074680921f838cb222d2c8a7cbf45af9c3ea3006426043b621b",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}