{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389572",
    "entityType": "User",
    "nonce": "0x7c41d0abd3272ee29b9e887aecc0d215cab8db962d034e5c6d624076e7fa72f1",
    "signature": "0x9c0190a7ff1f63ad50f7921088fb7ed5e0e1dfc4a2381ff1dfb793955f3932b53f3095bed3bae2bcd00db433ede8976616ca72a0547aa0b6524cbe64a3c586e61c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}