{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345624",
    "entityType": "User",
    "nonce": "0x69b3b6c9ac21ee06d3ed2ccde5400024ed36613d547b8f2778b9b07b26522b80",
    "signature": "0x460e7c5a0c77e1d4d2908559b7df931899589fec28d0e39c01199db2180256170e66638de7dceb6ff44c40a48dfb5b4bc21a97234657cbbe794709b876cfdbeb1c",
    "signer": "0x80005E1c5cb88Fd03a994eC8a06eFD4c801102D7",
    "userId": "225974748"
  }
}