{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "373173",
    "entityType": "User",
    "nonce": "0xed10bf056b6e5ae6415d34bb48e5e8c64d49f46e841dfe2f3502863af652b6c8",
    "signature": "0x39ddafe02c533cdb61325dea48e975d344d6e2e70093f714f8dabd4e95e9a94427cffbe065767de5b69144887c8b0096a6648cd7edd9faf3361b56e3dff0e6381b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}