{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xde812e326d968167fb7f140c4eea3f9188dcb723ada99e2b16063365fb476ee7",
    "signature": "0xb8dc09f040cd18b05e92a317a0b01c7bf6f87aafaabc8a8c57b75cf0324f4cbe3b9d256837955f940adde8fdec1ccb0d52cb6eff6d5cc6da3d58dc673bcaebf01b",
    "signer": "0x2E297f3415aa6DcaEB6D1f60e802F38Bc94cd868",
    "userId": "538651626"
  }
}