{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "38769",
    "entityType": "User",
    "nonce": "0x288cb1dd88f1aaed45b5b1be5abd9980f9d9e29c81d0b9da96b5b7c31658b778",
    "signature": "0x08fab55f24e8efc9d4754d36d9f4ef871694aadaab9e7b1ae102853e60faf9f22d63970a04edd2f5878c024e489f71a38d01bd3b0838d5a338acf2aa3e7ef5201b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}