{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0234b070d6e16db24433bf796412940581fc3804d6b0c942ccd1d5d72bd8fb80",
    "signature": "0xcb1e765c23c72a639d5d0146fe23a528a564ca0d3e3744dd60a707f3100c592064a6df856118ff52b97add9568edcb2969365cf11e8ef27e48e386a650570bd31b",
    "signer": "0x602EA30dcd9905E05e9DD478bf78c9a2AfC4BBF1",
    "userId": "283451747"
  }
}