{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "719754",
    "entityType": "User",
    "nonce": "0xf844e4d086949b4ced297c252fa157cff7ca0b79b1ef8b2c7f967e22d77c7231",
    "signature": "0x51a9780802729df7c0924bb57d4e095e89fab42b59fc53c689727639f481ced947203d6701cec7e00b563b999ac06547f8eed8ff95a4d52307ce7672a4ece66b1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}