{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15402",
    "entityType": "User",
    "nonce": "0xaa8981b1c4b707abb0bfcd89560fcba888504a4000478b94d5e48090554c8ea2",
    "signature": "0xecb6134d7a445579b663f02afa8f7852eb92bfc1a817981c62af0f4f4c85279b51c1caeac852d76899d731acf4558cafdc3e5cb9ac27dc2fd18d424997d6c6eb1b",
    "signer": "0x8ED8606Ab8cF49801aEa2bf8fFD349E9c85bC6a0",
    "userId": "464330844"
  }
}