{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xa76d0aae498cd1427da28405dfec1b0e5d980a34388d2115021defe826788ccb",
    "signature": "0x960a5d3efdd04e42d5c09d2d13e9b13a54680783d84283f7f248b4df81f244c228aaa0baccb0b673e82e95acbd80bec7752af2de069d2a27942dacbd35cc98bc1c",
    "signer": "0xDe6128EEdBB4d15D391871267E286E878C7011B6",
    "userId": "144906061"
  }
}