{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "673903161",
    "entityType": "User",
    "nonce": "0x95076c125c6e19f0f404d6fa19792167acc34054599b5e4dde51cbd70698a59d",
    "signature": "0x557d65e546627c725bc1629f50463227e26b805f17883218534c9930bde3715e22964d9703f6ab2f33d0e5b9908ce7caf3a18de7560bc9943fd677153e87a9041b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}