{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5511709870cf65e4cc69c4a0440c0b317fd1bd5592c7a0b2ad7f9790365e368f",
    "signature": "0xd2318531f0869f92e31805d278042630a76b69fddfeed34a51d20fc5989eb4b974f09a656f985716dbae66a6f70c07b8b25b43483ea77f1c2537c3f78ede0e2a1b",
    "signer": "0x51404d83355330Bc2d36B90a2F0b1bB62AF39c13",
    "userId": "679552717"
  }
}