{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "163451",
    "entityType": "User",
    "nonce": "0x1b778e0bd1622564dda5cf59081e60cc570e64fef4f63a76ecc02146f32a8b82",
    "signature": "0x1cd1d71a409ba8fa13d4f780dea67fce1d3421dff09ce1ca164353c8bbd91af260acfa7500583a0f8e0e9ffe20c7f9c0044f07a0bfd3384bce3be73df8b9a4c61c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}