{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe3d088a31c80ee59ce18241630b9d8102cd9ce19aeaa0f27db558cc2208f559a",
    "signature": "0xb422f300814529dd3f803358fb6eaa0d7f92774b7f5698bffda71f441a18a3565f3a65ec56455aadc81e1be927c116c0357e036a48f4e2c59ac84a68c80fa2d91c",
    "signer": "0x5Aa37ecfE3Cf09207289AC5f629acbf48f9046Bf",
    "userId": "71150411"
  }
}