{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x20cc030f26c8927b091a586479c52061fe394e7baa460fbd549443af4107d6eb",
    "signature": "0x2ed36ea7806412b3d37fe97fa9930d9c8bbe2a7c2d0a867c5ccaa6df8827314e524540bfa23623d0b50c525e62d6d9cbdab4ba458541e849976d2fd7b08477731b",
    "signer": "0x40f9c8F93a5aDBc620CB9B7707fAbcbA2fDFaBbA",
    "userId": "765901034"
  }
}