{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354535",
    "entityType": "User",
    "nonce": "0x4caea6cc0699bb33fb91f654c21d428d1e86a947a00dc0c010366c60ab1487e6",
    "signature": "0xe671c8ce05eb779474e1a9bbbcaff0b1d4268d65ab476d2fe2618c566578ba532ab2809fad7734001cc86b2814d22be0216ff7159539b0cea0dbabbf4fb9e6a71c",
    "signer": "0xE4c0c73a0c0CD7f65f1bE942f8127c8753aB89D9",
    "userId": "857284925"
  }
}