{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216629",
    "entityType": "User",
    "nonce": "0x446e0ec8505d41fb4b11a9f2702f8b6f722f4b4a1c16921e9385433b5c44c272",
    "signature": "0x192e74906f88af97aef75f1b0c3e8e9558dac82bcb9c1611244b6786b989c561262fa0e8585b3d3bd6d38dedc47981b9edc4d46b6f154edba377dfda39405ba91b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}