{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "81541",
    "entityType": "User",
    "nonce": "0x90068095b9f64f20610a36ce1530f40151939879d78fe14b447c6d8738b6ce12",
    "signature": "0x30d1f8242d8036f62b24214af20aa206b8243c8449d9c955bf76cbd5fe79207e1dc13b550c9530ca62058d088de57a18a825060c9aab1b8b81006cb77ec2bada1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}