{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa5f723c598b9072131901f0dca665b1b23d994a6c5d8016d4f0824f3e4ca6192",
    "signature": "0x937a54b7f5cb9a3a6d9c6e772bd2386fa6c3623e8775a5330818b4c8250339e43ac46c7bcc278633ba153995821ac4627de24cc8131924b8bb47148abe8152fe1c",
    "signer": "0xe1d49CDcC737a518797dFd4D669EbaAdcED5fe6e",
    "userId": "978436753"
  }
}