{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x9ef9cf7af5f07f51423f28ca8bff5277f50440ba6bc2ababb09f334134ba0e6e",
    "signature": "0x22a38a762daaf6e71df0489976eda0d057b5a843eca74a43ff2d80a80fc908f619584eb8429df8950ee07091cac6fedb502c0c108edeb0cb7519810e7fdb4b701c",
    "signer": "0x4d06c91F15b5e9aca3D65bb9E70FAB16Ea84A544",
    "userId": "475891759"
  }
}