{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306838",
    "entityType": "User",
    "nonce": "0x1fa658fcc4baff904ad00ebbdedb0ed0e73fb85fab81ff9d463975da4fbb647c",
    "signature": "0x14f13ff3e8df026caed65a15b4e938df6c34b9e6e2bea101df333698de4c07b67483e7be07357484038b66cb9d051b485c15b3b5da9b7a63b2876dbc1231ad2d1c",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}