{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309139",
    "entityType": "User",
    "nonce": "0x1ee4aa188aa222c4628e001b8041197ae78b54ff3e35651b1bf48b500e310bb9",
    "signature": "0x3d4aed55a2afb62e47e72cb663b2634982c5183b18a9d34158bdcb5f17a298dd2007c51fa121c2bd60589b0204b65c3b9c23a1382ce0a4c20f075946c16c60991c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}