{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508186998",
    "entityType": "User",
    "nonce": "0x08ab78c0ff9d9fa9a5060c2de18972fcea7c4f70feb8e4e645aaa0d116a88388",
    "signature": "0xb445c1b54d44a4d179438c0f9344cd739f4834b5cf953a059c7db12f3cfbca7042ab0436cb5e50ee99ea8fb132d5aa7d344995898de1943fa4069cae496643421c",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}