{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8c82a52b315577c97262dc4f8bc0dfa59783f35a2b4d53d3647f93d6197b9e13",
    "signature": "0x88708994575223944203fffd75e1e2e649cf90cc4b7342156782c2abeabdb50e39155f5c91a25222963934c72e2e1fc52297f2f1b5623a88d0c11133fb80089a1b",
    "signer": "0xd066f22fA095a1c8FbEb3a4b64A2a836620C8237",
    "userId": "321313158"
  }
}