{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc6ca192a87cc6d61a2b4230c6b81bebebe42b448b5f37dbf992dfb903844d829",
    "signature": "0xf0d623dc309fcee6e735d4bf7b388bae76546e6ce68f3a937afcf40009f5f1a974640991ef494c52d49e9008543b51e2d2099ebbbc6e8c06365fa19462f7a61a1c",
    "signer": "0xC2D06b0ba326BBbd704252222cBCc17D1299c3D1",
    "userId": "724346859"
  }
}