{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8d60bee9bcbc30553d0f60fc3f43a0e6f21684cec417b3a4aeeab5ceb16fec70",
    "signature": "0x57ec67e93a2007e7aa788a7cf5769fabeaa4a35d15584091a5392feee6dd262f0fbe8abd20ccea3fa87d451f4414839f7507a98c74899c0f6fc40d71fd2ed78c1c",
    "signer": "0x5f5A5A54FDA40835E9Ebe4ff02895B73ac4d3C43",
    "userId": "467389781"
  }
}