{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335878078",
    "entityType": "User",
    "nonce": "0x2cdb013edd9adaa0d2e8f5f9a073ba3f2a6af00615341a93e48aec7c4319df53",
    "signature": "0xf4a87c250b93d6402350faaabccabb2663e8226b31588e771f0d90c7533f2597734c232144b664717a36423215b80e88b3e05f91662b7489616fffab607b14d01b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}