{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "553023467",
    "entityType": "User",
    "nonce": "0xaa70aba7b972b0d1cba7a53b812196594c660744ccbaf8b121d2a1f9fb69ec39",
    "signature": "0xb810d95dc3ecbde73b4eba35a0c1a662bb07b03523df9fc8f83a70174cb9735c6e6446c3aab2697bfdc01aa8277750ccfdb3488332d6fa41e191382b884ff9b81c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}