{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306115",
    "entityType": "User",
    "nonce": "0x68478eaf27918f5a90556ee3fe9532bdc86e84d46bdeea4941623d377d10b78b",
    "signature": "0x131f1d60f5a895fca0383e2abe28c339e23f7d0d37f3046ff50a7186658cb676428fc50e667af9673a49e0f750ca062928cbe45e0e6bc5311538786f66cec20a1c",
    "signer": "0xbb784CE30A57AFA0D06231Be6E8Ab528F0a1a00E",
    "userId": "727467249"
  }
}