{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "122601",
    "entityType": "User",
    "nonce": "0xc9bf5b3ca26812ff5c02541de62c8ced577fbfa5003b4caef31808aa58373021",
    "signature": "0x0c8e7fd2e20876f52a6c563787ba5b394c678df11f3a1c3cfb46f13e10c3f1f464d881ebf5235aad9fa7c806957eaf17e1fd9c4576f227aac89a177cb13a07ee1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}