{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103316",
    "entityType": "User",
    "nonce": "0x2872aa39c108e001f782ac0019b19ce01ccc7a8789b618427920ccb346eeb02a",
    "signature": "0x8bb34eaf55769dde04860335794543c1ef04980f1c3ab7dd9bf03e9820d22ec012f1eb3f90ffb91fb36b1774aefb2f1b483e53611b24817ab510b18e26398c031c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}