{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4516",
    "entityType": "User",
    "nonce": "0x660b757ffb223e40de9dc0f69e8e9e869e2c4c9a9796a6f860bd00d96c4b5bac",
    "signature": "0xb7d553d66b03b341121623b4d235b4baf62ec5ad3ee41504054a35160470e9aa09ec33442c164b32660536b51b4178c72a18cbd91ebd8529e339ff5f6a240bfb1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}