{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "538738264",
    "entityType": "User",
    "nonce": "0x615b96b3e8d889942abe7b738ca3d04fcaee1a05bab2f5b8b7df515bc1060c21",
    "signature": "0xd34dd197d81d3d6341ec413770e49aae159f8162eb9c605ae505e68eb52e996d6fc82b4a89c3b594ee611a26e71388d266a5c90029bcb2b92042274027876e501c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}