{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf44d8407a415bc847a5000d5d2874288fd7d4728a25c8ba93971fe9bebf1b0dc",
    "signature": "0x3e7a92fe75b2fbd70ed5283a24b44c81b336d595bccdc9906e4cf47d06391bdb399802e10c1ba9eca19f22abe41f2bf5047cddd68490013ff955fa2e76b10efa1c",
    "signer": "0x0C30f089671423bBfFAC9AD524446bAbD9a59f29",
    "userId": "512140280"
  }
}