{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "128415",
    "entityType": "User",
    "nonce": "0x7cd3ff9fd98025d17eacdd840e0b5f7f539ded99706219b80b3569bab93ee62a",
    "signature": "0x875f3e2ca5d735351bd7a6c4ee4f522d736e7f2de5b53883cfb64e74a5e0640143c3d96e3740f4bfa92ecf66ae92e116e31fee9accd06039596578c9c8e9d9181b",
    "signer": "0x03803b915E0AAee5C2c5aA3510FCc5b4DBb0FF46",
    "userId": "629975650"
  }
}