{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "775844",
    "entityType": "User",
    "nonce": "0xe0370afd2d392a4d6d3bc3d41f5354b436fb40c4d86e518947f6dd6302535660",
    "signature": "0x18f7b72b69b9a3bf910f13d230be2ff15c5e0a9fd8d437aac1c522b20a1551704b8a5e25c1dc93bf08a63af8a287cba9e8e16cea574d3996bef131816f035e5b1b",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}