{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "883647137",
    "entityType": "User",
    "nonce": "0xd7a9ebc2d4bdc50a7a4301d0f3dc37c017cf2938260730f7e8aa52e385c5c308",
    "signature": "0xa8330519413290a47485d976f78d43111f5b0bccf3b9140ea7cf91fcdf780d8b62c8c2d8eafdac29f642b7c157a7e97d4258468f40f058bedc49ab854687820f1c",
    "signer": "0xc925e3D5c81807Eb402BaF80F986fc737F7EfB5c",
    "userId": "230578654"
  }
}