{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216497",
    "entityType": "User",
    "nonce": "0x4b6b790bf92cbfc517cdd1262f85916c95f9e0381908c099b148162761820c9a",
    "signature": "0x7c450dd2fef15ef9e8dc283c32eb7159a4385a788fe1fc2613a7b812b82617ce6edc9795cbb2e940ca1cf298f3d5aacd2c24231da0a70fac6cc813fd98c694341c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}