{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0xf63f110cbdc3ee4decff04341f63407c717cf916cffe3a82d4999046d87652fa",
    "signature": "0x66455e4a7361d71f1354cba99a726576acdcadb3a04c2b0a8d7c1c3f821109af547dbb4ddbbfcd2eeba6eacc74447a8aef8729b274ba5ecaf7f495a3fea691b51b",
    "signer": "0xA5B992EbFAEbD55D4217047d79E7284DD1A9FbeA",
    "userId": "142655"
  }
}