{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "604965749",
    "entityType": "User",
    "nonce": "0x5f8a7e54138c881d6267d720146533e1944df3bcc623498522d7687dcf8188fb",
    "signature": "0x0c4ee076ac0d372c1523244e8b6e4df38976881027eea362bbd08fe5f6d9de590ae6ffcc95465f8e6e6e08381220a9950b1dbdf0472872e8873b0baa733deb061b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}