{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53710",
    "entityType": "User",
    "nonce": "0x9f66b6ed83a7444c88fc045e6ceeff08cf16d493ccb5eeb24b5c948722b581bf",
    "signature": "0x2a939ddda8040a7b1fdf0ae901b68d853f6bdaedb57d9425124b417e37e6bcff28f01c9f67d3235347052382047e408010a5c2fb4512433156b137088ac74f1f1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}