{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x193f1fb784982da7eb4149a34fe4fd6a2a80f2d294beaba6ac68996e7da27a3a",
    "signature": "0x7f68d361621a9e792829bd19808a41bf2d383baa620c3d1e1602e44bf14f53650f0d53520682ab2bae3127ef1c1efe06f554ef00244f98fca0a1f4828f36d1d11c",
    "signer": "0x2a2d58bC87E4762394539A31b2F1830a3cb6E5f6",
    "userId": "751098129"
  }
}