{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55901",
    "entityType": "User",
    "nonce": "0xa331cb5745de22c0e1fff2348beaa231184d72fccaf19c614f6bfe117d0fdb23",
    "signature": "0xc346b499d0bced72bc434d301387c97574087e43149694102af720bc98b55b772aad40c8dd06b954e9df5e6a20539297da1e9d6d67f2b6d2f6ed1dcd2922896b1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}