{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377608",
    "entityType": "User",
    "nonce": "0xa80923198c7ef811b60fc68d2d1fa543f245f49aec60d701b49af2669a093a60",
    "signature": "0x9cfd018c77699e61db406df165e819d5d9da0294dae07afb77997e393e147b715b7dec3293acf1c433447eee6698b505244531618da1dc20e2076507828ac80c1b",
    "signer": "0x90A9ad55aae6A3ac7D73EB5114a90ac9AEB777F7",
    "userId": "815799751"
  }
}