{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103704",
    "entityType": "User",
    "nonce": "0xafa18e6cdd98d7304241cc518a9d674cf46f11e3369be109710ef87431cb8d31",
    "signature": "0x2c4e9cb9092c97d23fa2e728769f1f82706d90443d5515711f57517f53fc8d4f78f725b00f450cc59622b915db98b8d653306995b8b196522bde0be2af458b301c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}