{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778620549",
    "entityType": "User",
    "nonce": "0xf3bd3b9987402b5d7d2fb58bac2a58b3d4728c5010bbccda76cd7370037420e6",
    "signature": "0xdddde0293d8dd513bd789806167bc6db77e98efc7e89972ca18bf90a91d40c354754d3cfde035c6e7c064de7cc028df066cb284420fee2410e6e11b30608731f1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}