{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x61e730dad9a0e571d4b360d35f154aae158a3cb77410c08f401b56fdd9cfe781",
    "signature": "0xe4a38a23bd4927fca2a5b1f80d8552099975b2ca1c2d61ec0f6203feaf3e96c5300a55309f78a1e159121e0a25622e946440eff1faa57fc9243303435d6b84e71c",
    "signer": "0x3EdB4fc03a86B5683267ae72B3FFB61EeD5D6A01",
    "userId": "912985259"
  }
}