{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xddc27f99f98fbc01f13ccc31e69569ba79e91d5ad2f0e8965078b787f712d086",
    "signature": "0xd5ff1309938f2189deeec56cac77754729850cc14d517751bb5cd6f83387d17601a56552606e3f5b3e8d4c420e0868eb946fab28637338c40380f0d66cc3694e1b",
    "signer": "0x511F80f06f8395Af47f4aB5b2c9416786E83D2C0",
    "userId": "671962508"
  }
}