{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "594112954",
    "entityType": "User",
    "nonce": "0x68d2810ce6a893597ece43030b83decde72e8d94c4fa8c801d335dde969241ae",
    "signature": "0x8483de1aeef620061a6cff57c72566746d9a36c352667066a3d2e53fac0436803df5674721980110a4b39436458b67612dc8f7be091749ffd47182c23c24f9c21b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}