{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbb1241b0d8caad7fcc28ec9b58e5e03c3aa3d88fe45a746ff217f4611666b77e",
    "signature": "0xf73a9cd83ce9b6d89b564f4ca003143ef80dfbb8d5be5a9a844e75664f501c17739cf62e609760d88c633d751c0970e8142d343f0f828764b0a3f8c3be08d3ce1c",
    "signer": "0x407A885e58988dA0Be1611f90EEc21139696A6c0",
    "userId": "905286926"
  }
}