{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144602",
    "entityType": "User",
    "nonce": "0x599a69c57586ae986d9a93bd7243e7cfc79ed254c2362c47987c139525142075",
    "signature": "0xbaec4aa3ac7b0640d87640329cd9853e840163c9352de73b3188f8beb57cb4910bfb03c162517b8e4ee5bdd42e46025b71f316e36e50510fdf5e3280a205e2901c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}