{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9d136d0e167f65252cd3e6e3d74564ddcb2a94983f9f45a703a9ae794f2954d1",
    "signature": "0x204c63ffe2e1d7b5c0d876f4a0e1e10f53d4cfcc3e5a1436b67dc9d8d34f197217eb813dd21fd5fb2377c0b842af528ba4707456d9f00cfcd0e4d1b711f56c651b",
    "signer": "0xcf3499C4b67B7A4aFaCc93A32c308B75d87Ca31B",
    "userId": "869385937"
  }
}