{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf01a668b530a7bda4855bf1659d9db398eebc7ce31e8e43c9326929559ad603c",
    "signature": "0x550fc2a92c5150642df5162f7da21f7ca34460facd65ab3660f7d9a5daa7a1dd2d43de8db077f7a1df2a828034152cbef96b54c084b86bcd5d1eeb08d940803f1b",
    "signer": "0x764971D2fD130Ad6faE1AafEF803bAe01405680c",
    "userId": "423416308"
  }
}