{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "878327107",
    "entityType": "User",
    "nonce": "0xd261760b6c9b911ef1ca33ab8edeaee29c26bdd168095745ba2b958184affb0a",
    "signature": "0x4fba62ef1d3aaf506c73a9d6e2aeaba828c8037eaf78248a1743583aa0625a1f3ffd3e86ce1505d0e88128b0a88883b3785e1bb9cf1f675ae7b33928cb0861b61c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}