{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0x861b12403a4eb35c9a8d1c941a3c72210c02d1a09535ed1561969f3923b4490d",
    "signature": "0xfe457dd2b65de6583de33aa0d8180c4930c1543034ab618912441a4fa8b219bc5341c520c6688a11e2a694991547627aa202b864895fd4752cc2a5730727912b1c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}