{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "966718637",
    "entityType": "User",
    "nonce": "0x297143ca8b43177ad204f195ac8a5ad9f0bf26e5a084d45f7b2c1bf3de653a15",
    "signature": "0x73ec4b16a4ebbae8660e3509d84fb8bb71c2e601faa43b0e0dea577a8a24919f26a99e76e38e25f6e52f06a441ab765839013476c8b430b1cbe0763f1439e9d51b",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}