{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8151",
    "entityType": "User",
    "nonce": "0x89b865ac9996e68cd8102e757a835f2ad1dc06229a2dd467990c64e8b01d84c9",
    "signature": "0x2105e2fada6e88e6b9ac6e14558e6afcfac86105ff59386e71144d44690cc78712cafde4802a95141e958f3f05f9943079d51f927ad768ad7693860669e3b4311b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}