{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x500aa0d6fa6bbe89d7ebc653190538033619cf0c21537cf12e7b4a5e01f38d59",
    "signature": "0x1422c9142ef2c10da63c0e3b804a066ad2049e01deb046349b7bf59b4b84f49058fd9dd583d0138920e1a868d03f2deeeeef88fb14fe076947ce4569e8c47eda1b",
    "signer": "0x29C4036ECcf06AE3f654D2a1A30d1f9eDAd45E20",
    "userId": "45824277"
  }
}