{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197303194",
    "entityType": "User",
    "nonce": "0x2bc2ab4d4a354d8f1ac825d9916c7a9c3ee858a8dcba924b540c6ea9f18d45fb",
    "signature": "0x0159603b465ac36de32e5ad1697b6546e9424a60c77ca35ac410a507d21b10c24d4a847d47f49271c7022ceb984b4f9ebbe63f1fbc6e9783204aa0184624d4cb1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}