{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3a5eec9303b902f042daa141a7c5a7fdf7f6923766939c8eb94a753974dcf175",
    "signature": "0xc6f6940ed1966b663e1e2a93f1bdad6c243b3ee96678ccbd3a358242f1bee80b2871fab3672f26a0defe4f486c94120292ce305e7854543fa93c33a4cf206cd91b",
    "signer": "0xAA85251ed30cCbC6c38f711829968d573b29f84b",
    "userId": "318203871"
  }
}