{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "775461824",
    "entityType": "User",
    "nonce": "0x40b2b9246e5da172fc8afeddcb364db769003107d17af301c8ab3e73eb33320a",
    "signature": "0x65ae7691d801e68dc840c68e8a9001ea68748bab8864bf24f8fb8e81fdce3e5d643a3115733a1bf1258a98a93bd8e40eaeead115740b64654f7b6c624a1846c11b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}