{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "615702798",
    "entityType": "User",
    "nonce": "0xd19a026a290eb48fa78320cb03517f3885e55a608847ee7a5b4d3c87e1c5fe54",
    "signature": "0xf8647148c8dcdb513dcbfa30c1d212bdf542d8f68224bb3d555837ade51dcd1a5fd15646b8ef0d91c9b6021cd112e0458f2d1997fa9d43f4de2c48a2ddff3bb41b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}