{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "421466063",
    "entityType": "User",
    "nonce": "0xc7a0018fe4f28f09c1cfdf7a69ff2798b3f8d9b439defbc7d6bca4594cd7b02a",
    "signature": "0x3ccd940e2b3d6461307a642cf0f0223d7f959183edd6ad40f110fc228e861b6500d6c179bd5982a43bb7e859643bbe7714f679d9ccba738a2301bb37c66647af1b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}