{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3badbfd296994cb41de806de93b0eec2223d6cff45b87241f2492522bf315f3f",
    "signature": "0xf9b6fd227f090efa98899c380723bde79bb1e0eda6a61f79fe0f8801c8aff12438136649e4d30c04255516b468efe7dce5cdbbb38e1891b752e7e124634dc7631c",
    "signer": "0x6370bBD2Af458B7e9105B70aA4C95049deA95a6E",
    "userId": "753303354"
  }
}