{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "487509604",
    "entityType": "User",
    "nonce": "0xdca369406d10f6d950e150bcd2ca629ef1363205ac452f291f15243e2188fd91",
    "signature": "0x03ebafb676e324bb9a24aac0ca3da63e06d007fd18ca899d4ea3b9c59c415ffd426da1326b53b4354dc77baee0c15c9a426c3f0ac5d6b645d1b01136f168c8f31c",
    "signer": "0x1Ef5331d98352E3A7eb4f177ae6BbD27cA99eD1B",
    "userId": "771602835"
  }
}