{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0x8dc9f20ca3e669739551b723811e4eeb44d349d0f2bd97e3d0f7a680bc6a88d7",
    "signature": "0x9f41013a44734d5f119766e20fad60bc3d00f6462ecd7ef4a5d9bad35a8a295465f314568a11e3cdaf34cfe2207283dbc3390e0e7bda3aa240d0dd2a6fad847b1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}