{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "444398731",
    "entityType": "User",
    "nonce": "0x94247bceb07ccd1a99d66aca58ae7ba6e0a28d7a29310474b7903996fcf41fa9",
    "signature": "0x63c48a4c372b14ae82735864538b9ca2d354deb8f406cf73cce60c7d6685c4e059bf1acce8c02b1a17a3422b5ce503cc84d9345be9e99b6dc7d6628be94c8df71b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}