{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "678556080",
    "entityType": "User",
    "nonce": "0xa283aefcd53aa24252f23dbcf7d02d0ca59a707d94922367f68fd344f636057c",
    "signature": "0xf13fc4e5fed364ca77fc67a35af6c67f93930dce89e0ef3b1ec35b0ae772ff1349b715df5fb80088244d0e52355a72ca014991056c275a221a051767655dda931b",
    "signer": "0x720537125Aa4b451266209E0d508D7576a4bAF94",
    "userId": "942771296"
  }
}