{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1512779",
    "entityType": "User",
    "nonce": "0x1f6d128c0fb921c41312d4b52f1680de3291c70c69c94b5b917d55fdd5f3bd04",
    "signature": "0x22a5195fb57a7cfbef1e86a64b39c0ecd0f115d51c00d1c04d9524b7bff16cd27a8aa791c68c7123aff4be9ab7d6a34179d6b82a450aabacf8482d3a01df67551b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}