{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x08a96f07e84309c42a5b6aacdb68737ae187b896f47ece07f321a1b9a293b5ec",
    "signature": "0x04c265d3e3769013b821ec821794cb7d0fcb9119ee192038101f718cea420530254a4329cff78b76f6e907a59cbbcec06b8c3950bbcc2bce7fd776a0a0f7a96e1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}