{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "485987672",
    "entityType": "User",
    "nonce": "0x580835945b413444949354ce24f88ace96c16e06554de92a84504029463f74f2",
    "signature": "0xce70d811cf4499f302b64bb1f80e661f0af8d704e4cc41a5fc4d3b3da7f2ce7e32c8793edb48a8abfaca3948a4c2b6aa5ed56bd6ddffbabc72da597c1b57f83a1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}